Levitt, S. D. (2009). Super Freakonomics: [global cooling, patriotic prostitutes and why suicide bombers should buy life insurance]. Harper.
Chicago-viite (17. p.)Levitt, Steven D. Super Freakonomics: [global Cooling, Patriotic Prostitutes and Why Suicide Bombers Should Buy Life Insurance]. USA: Harper, 2009.
MLA-viite (9. p.)Levitt, Steven D. Super Freakonomics: [global Cooling, Patriotic Prostitutes and Why Suicide Bombers Should Buy Life Insurance]. Harper, 2009.
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